Question for old comm guy

This is a question for old comm guy regarding his reply to:
Power Mac G5 will not boot. No Chime, Black Screen, Solid LED.
1534 Views 16 Replies Latest reply: Apr 20, 2011 3:38 PM by old comm guy
     I have the same problem with a Mac G4 graphics. All of your comments were very interesting and helpful to me. My question is regarding the following comment:
          "OK, you shouldn't have an active LED inside the computer, so that may be indicating the problem.  Is the LED near the CPUs or is it near the front by the RAM?  (This is a definite worry.)"
     My G4 does have an active red LED (c64)on the right side of the bottom DRAM slot. Can you tell me why the worry and what a fix, if any, might be?  Thanks in advance for your response.

Maybe the following quote can answer the question:
There is one red LED on the Power Mac G4 (AGP Graphics) logic board. It indicates that there is power to the board and does not imply a fault condition. Hardware such as DIMMs and PCI cards should not be installed or removed when the LED is on.
Or this quote:
There are seven diagnostic LEDs on the Power Mac G4 (PCI Graphics) logic board.
DS1 = ATA drive activity
DS4 and DS5 = USB power for downstream devices  (There is no DS2 or DS3 on the board.)
DS6 = Ultra ATA bus activity
DS7 & DS8 = Power Indication
In a working unit, these LEDs should be in sync with each other: both on or both off. If one LED is on and the other is off, there is a problem.
DS9 = CPU Bus
Hope that helps.  In the AGP graphics version, the LED is there I guess to keep someone from, say, yanking out a DIMM while the board is powered, or some other not-so-good action.

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  • A different question for "Old Comm Guy" about that quote for G4 PCI "YIKES" machines, mine has only 5 led's, but do fit the lighting sequence listed.

    My G4 400 Mhz PCI "YIKES" machine has only 5 led's, none in DS4 or DS5, nothing there but the un-molested sodlier bumps (never has anything been there), and my lighting sequences are 7 & 8 are on together, the others are dependant upon keystrokes or other demands (mouse, etc.).
    There are seven diagnostic LEDs on the Power Mac G4 (PCI Graphics) logic board.
    DS1 = ATA drive activity
    DS4 and DS5 = USB power for downstream devices  (There is no DS2 or DS3 on the board.)
    DS6 = Ultra ATA bus activity
    DS7 & DS8 = Power Indication
    In a working unit, these LEDs should be in sync with each other: both on or both off. If one LED is on and the other is off, there is a problem.
    DS9 = CPU Bus
    Now I have a problem that started when I opened the side to check the led's in operation, side was open for 6 or 7 minutes and I got the screen of death, darkened, need restart, multi languages. ....  I had just cured the start-up problems I was having for a month, 10 days ago. It was the powered USB hub plugged into the machines back panel, instead of the K/B port, I did have the mouse to the K/B and hub to back of machine, swapped locations and it was fixed, even the dead printer came to life and began printing (hadn't worked for 10 months !!)
    What cuased the "screen of death" was traced to a memory dimm / ram stick that died, a PC133, 256MB made by 16X8 (or XB), I swear I wasn't dragging chains over the M/B, or anything really stupid, (I ain't the sharpest knife in the drawer, but not dumb either).
    The "death screen" has caued a big headache, very hard to get to Applejack, open firmware, ect., I have, but not with any consistancy, did them, did DU test & verify, all passed "GOOD" or "no problems", all this was done in "safe boot mode", but I can't get to "regular mode" after restart !! ...  it just sits on the gray apple screen w/o the spinning gear / wheel for hours !!!
    Any ideas would be nice to hear, I plan on doing a re-install or repair / restore from / with the install DVD tomorrow.
    And a link to info. of which ram / dimm memory sticks I might use from the other machines I have here, a G3 B&W, G4 QS 800 DP, etc. what will interchange ?, if any ?  ...........  Thanks for any input you may have, ..... wayne146 .....
    I need some sleep, this has given me a massive headache, all because I read that quote and knew my lights didn't quite match it. ..... If only I had not cared, I migth not have gotten in such a bind / blunder, stupid me, I could resist it, I had to look for a compairison.
    signing off for a few hours ....... wayne146 ..........

    Good Morning, old comm guy,
    Well I tried following your instructions to the letter, as best my limited knowledge would take me.
    I opened the "terminal window", then "terminal preferences", the proper radio button was already checked for the phrase you indicated, and the insert line / window had "/bin/bash/", grayed out in it, below that is the "declare  terminal type"  that was set to "xterm color", so I couldn't change the grayed out window, but I could make selections for "declare. term. type"  ... I left that as it was at "xterm color".
    In the bottom of the Term. Pref. window is a "Open a saved term. file ...." and a window to enter a selection, when I clicked on "select", it open a "finder window" ,<applications> with almost everything grayed out, not knowing what to do, I backed out of the finder window, and also I can't just type a command into the "open a saved term. file" window, it must be done with the select button. 
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    And anther bit of weirdness is that while the Apple Tech. info says this uses PC 100 sdram, every stick of memory in this machine has stickers on them from different makers saying that they are PC 133 sdram of 256 mb. ??? ..... Can this be true ?, has this thing altered itself or altered the RAM, to work with each other ???
    After it started working "properly" (?), both Firefox and Safari crashed many times and often, so I dumped Firefox (3.6.19) and reloaded a fresh FF 3.6.19, as I may have done something to them by accident in my panicing and buggering around, even had a Screen of Death 1 or 2 times, and it restarted with only a push of the front reset button, restarted as if it was just turned on with no problems lurking in it's past. .... Also weird !!! ????? 
    The New FireFox (3.6.19) hasn't crashed since the new install, that maybe OK now, time will tell,  ........ wonder if the wrong ram was causing browsers to crash ???? ... or is the ram wrong ??... why is it working ???
    All the Ram stick were bought from "Chris", the Apple Expert @ RE - PC, here in Seattle, he also sold me this YIKES machine, so there was no mistake as to what I wanted the RAM for.
    I have a spare G3 B/W 450Mhz machine that also has pc 133 sdram in it as well, same thing with it, bought from "Chris", and the Ram in it too. It only has OS 9.2.2 on it, I need to do the work around to put Tiger 10.4.11 on it. Later .......
    Well what do you think ??? ..... It's alot to process, take your time,
    Please review this babbling I have put forth, it could be written a little clearer, but I have read it over twice and it makes sense as I read it (of course, I know what I meant when I typed it)......
    .........Thanks for your time and help. ........wayne146 ....... (all nighter again, going for a nap, back in 4 - 5 hrs.) ...............wayne146 ........

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    ThumbJPGSegment.data
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    Of course you can't, because you need COM and OLE!
    I am quite familiar with different flavors of Unix, but those operating systems do not have the rich API and program integration features namely COM and OLE that Windows has, because it violates the Unix idea of security by process isolation!
    Yes that idea of process isolation keeps the operating system safe from malicious code in applications and from one application taking the others down, but you lose the power of programs working together, and you simply cannot build the type of customized business applications that I build by myself, without reinventing the wheel over and over and without having a large team with lots of programmers.
    For example, my customers and millions of others spend all day working in Word and Excel, and the Windows idea that I can transparently integrate my complex business applications right in Word and Excel menu, and into their templates and macros, is why third party developers like me prefer Windows over Unix, regardless of how much better security in Unix is.
    Do not get me wrong, Java improves business application development on Unix, but unfortuantely it is not feasable to rewrite ever legacy application in Java, and Java does not integrate well with other programming languages.
    I used to code business application for both IBM MVS and Sun Solaris, and I never want to go back to those "bad" old days again, once I took the time to learn how to PROPERLY code using Win32API/COM/OLE/.NET!

    At risk of feeding the troll I'll wander in here:
    NOTE: Since this is an Apple programming boards and I have limited experience programming on traditional Unix systems (and most of that in college) I will confine my answers to the area I know.
    If you had to build a business application that has to allow users to, spell and grammer check, and perform financial calculations, and render the HTML, how would you compare the effort to do this in Windows versus that in Linux, AIX, Solaris or any other Unix operating system?
    I can make this business application have these features in ONE DAY on Windows, because COM and OLE lets me, use Word to spell and grammer check, Excel to do the financial calculations, and IE to render the HTML!
    Note that this scenario assumes the user has Microsoft office installed. The person argues that they don't have to purchase libraries to program but what they are effectively doing is simply transferring that cost to user. I don't have to purchase libraries but everyone of my users needs to. Good for you, very good for Microsoft but bad for your customer - IMHO. OK, I know "But all Windows business users have Office installed already." When it comes free with the system then I'll retract my objection.
    Under OS X and Cocoa many of these functions are intrinsic to the system layer and do not require any applications to be installed. Using Cocoa you can write a simple Word processor that has rulers, full font manipulation (including kerning, spacing and leading), Document Save and Load, Printing, Export to PDF as well as spell-checking in under 10 lines of actual code. Adding a custom file type and icon for full system integration will add another 5 minutes to your programing.
    In case you think I'm blowing smoke here is a tutorial from 2002 (yes, this has been possible for over 5 years) outlining the 8 line Word Processor build in Cocoa. http://www.stone.com/TheCocoa_Files/What_s_sofunny.html
    And yes, Cocoa also includes Webkit so I can add full HTML rendering by dragging in a WebKit window to my user interface. For an experienced Cocoa programmer this certainly sounds like less than a day of programming - in fact it sounds like a good tutorial for a middle-experienced training day or 2 day class in Cocoa.
    I won't include the link to the 1 line web browser you can build in Cocoa using Webkit because it's shorter than the description. Feel free to search for it if you want to.
    HONESTLY tell me and others reading this thread how you would go about create the customized business application I described above by yourself in a Unix instead of Windows, and tell us how many MONTHS or YEARS it would take you, or how you would have to BUY some other third party libraries to do what Word, Excel, and IE!
    BUT this is all done from the stock system that is on every OS X computer not simply those with Office installed. Obviously you'd need to add some features that were more complicated than this - because any halfway decent programmer could turn this stuff out - and polish takes a while but to meet the requirements of the challenge it would take 2 days tops.
    Is every *nix programming environment like this? I don't know I can only answer for the system that I have experience with and is the concern of this board. If you really have questions regarding *nix programming then I suggest you find an appropriate board and troll^H^H^H^H^H ask there.
    If you're ever serious about programming on the Mac feel free to stop by and actually take a look at it. I think you'll be surprised.
    =Tod

  • SOME SIMPLE QUESTIONS FOR ALL OF YOU

    hi,
    I have some questions for all of you.
    1. Oracle uses cgi (even asp!!! I've seen an asp page somewhere on an Oracle's site but this moment I don't remember where perhaps it is asp->cgi). Why ?
    Oracle doesn't support their techologies
    (Pl/SQL, Jsevlets,XML) ?
    2. Oracle says that has just released a
    new product for mobiles called "Portal2Go".
    I tried to install this product on NT with OAS 4.8.1.
    I had many problems during the installation and after many tries finally I did it(thanks God). but the problems continue...
    many Jsp errors (from the "tested" supplied apps). My question is:
    a. This product is in an early stage (many installation errors.. just a baby) and I think is stable for Sun Solaris but not on NT.
    b. You Oracle "experts" (i.e. oracle staff, NOT YOU guys) tell me ONE advantage to use you product (I'm an oracle developer for 6 years now):
    You say that I can PORT my existing app in any device and Web (through XML). This is a joke. Mobiles,PalmPCs,Web etc. have different requirements (content,display etc).The scope is different.. so this is absolutely FALSE (to use a boolean).
    This release is user unfrienlty. Why.. tell me WHY to pay for a product and for extra hardware (read the product technical reqs!!) to do the SAME THINK
    I do NOW with existing sources.
    I've developed an app for my company's employees using existing version of DB (8.0.5),pure pl/sql and a WAP GATEWAY.NOTHING LESS NOTHING MORE.
    please answer. Any comment welcomed...
    maybe I'm wrong maybe I'm not.
    PS.WHERE THE WAP GATEWAY/SERVER IS. I searced the cd and..nothing :-) ?
    thanks
    thanasis j.a.
    B.A. in Informatics
    M.Sc. in IS

    Portal-to-Go is a wireless portal server, the first version was released November 1999.
    The problems you describe that mobiles, Palm devices, etc all have different characteristics is one of the key reasons for Portal-to-Go. It allows any service to be displayed on any device by generating content in an appropriate format for specific devices. This way you can take into consideration the size of the screen, the display characteristics, etc.
    It is 'stable' on Solaris and NT, though it is true that the installation procedure of the CD is for Solaris only. The product is not currently available on OTN, so the installer restrictions should have been explained to you when you obtained the CD.
    Why Portal-to-Go? Here's three reasons:
    1. Inherent problems of the User Interface for a wireless device, so we provide a way personalise the UI to improve navigation and allow commonly used parameters to be saved as stored preferences through the portal.
    2. Differences in the characteristics between wireless devices make it hard to support all type without re-creating content and applications for each specific case. With Portal-to-Go, the same service can be accessed from any device.
    3. Lack of content available for WAP and other wireless devices. We have tools to quickly create wireless services from existing Web sites as well as an application platform for creating new Java or database applications for wireless devices.
    You are correct that the product does not have a WAP gateway.
    I'm not sure where you are located, but feel free to contact me offline. I can answer any specific questions, or get you contact with a local Oracle representative.
    At the moment, if anyone wants to obtain a copy of Portal-to-Go, you should contact your local Oracle representatives.
    Paul

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